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For optimum viewing satisfaction, follow these simple procedures.  Nomenclature used to describe components and 
controls can be identified by referring to the diagram at left. 
 

UNPACKING 
 

1.  Carefully remove microscope, dustcover, 0.9mm L hex key wrench, “C” wrench for tension adjustment and recharger.  

Always handle and move microscope by securely holding the arm of microscope.  Avoid touching any of the lens 
surfaces while handling the microscope.  Dust, dirt, or fingerprints can damage the delicate lens surfaces or adversely 
affect image quality. 

 
2.  Examine packing material before you discard it.  Retain the styrofoam container in case you need to transport, store, 

or return the microscope for service.  If it becomes necessary to ship the microscope for any reason, pack it in the 
styrofoam container, and then pack the styrofoam in another corrugated shipping container for optimum protection.  
Use of the styrofoam alone will not provide adequate protection in transit, and will void your warranty. 

 

DESCRIPTION OF COMPONENTS

 

 
1.  EYEPIECE  (ocular lens)  Lens closest to the eye, magnifies the primary image formed by the objective lens.  The 

eyepiece is equipped with a “pointer” that rotates as the eyepiece is turned. 

 
2.  OBJECTIVE TURRET (nosepiece)  Revolving turret which holds objective lenses, permits changes of magnification 

by rotating different powered objective lenses into optical path. 

 
3.  OBJECTIVE LENS    Lens closest to the object being viewed, forms first magnified image of the specimen. 
 
4.  STAGE CLIPS   Two locked-on clips hold specimen slide in place on stage.  Note:  Your microscope is already drilled 

and tapped to accept an optional mechanical stage.  Mechanical stage replaces stage clips and permits precise, 
mechanical manipulation of the specimen slide. 

 
5.  STAGE    Platform of the microscope where the specimen slide is placed. 
 
6.  CONDENSER LENS    A specially designed condenser lens, fixed in center of stage, condenses light rays from 

substage illumination and fills the back lens element of objective lens to improve image resolution. 

 
7.  DISC DIAPHRAGM    Rotating disc located below stage, with holes of various apertures, designed to help achieve 

optimum resolution of the objective lens.  Larger apertures used for higher magnifications, and smaller apertures used 
for lower magnification.  

 
8.  SAFETY RACK STOP    When properly adjusted, controls maximum upward travel of stage.  Prevents higher power 

objectives from breaking specimen slides, prevents damage to objective lenses.  This stop has been pre-adjusted at 
the factory. 

 
9.  FOCUSING KNOBS    Coarse focusing knobs (larger knobs) located on each side of arm, raise or lower stage to 

bring specimen image into focus.  Fine focus knobs (smaller knobs located just below coarse focusing knobs) permit 
more precise image adjustment. 

 
10.  ILLUMINATION    Built-in substage electric LED illuminator provides constant, reliable, pre-focused illumination equal 

to a 20-watt tungsten bulb.  Powered by 3 rechargeable AA nickel metal hydride batteries, no power outlet or electrical 
cord is needed. 

 

OPERATION

 

 
1.  Place microscope directly in front of you in a manner which permits you to comfortably look into the eyepiece.  Note 

that the head of microscope rotates 360

º

, permitting you to operate the microscope from the front or from the back, 

whichever is most convenient for you.  It also permits convenient sharing of microscope by more than one user, by 
simply rotating head, without needing to move entire microscope.  Most users will position the microscope with the 
arm facing them so that focusing knobs are most convenient to reach. 

Summary of Contents for 131-RLED

Page 1: ...cientific Instruments Inc 6508 Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR MODEL 131 RLED COMPOUND MICROSCOPES Copyright 3 31 10 National Optical Scientific Instrument Inc ...

Page 2: ... stage clips and permits precise mechanical manipulation of the specimen slide 5 STAGE Platform of the microscope where the specimen slide is placed 6 CONDENSER LENS A specially designed condenser lens fixed in center of stage condenses light rays from substage illumination and fills the back lens element of objective lens to improve image resolution 7 DISC DIAPHRAGM Rotating disc located below st...

Page 3: ...ity knob until image is illuminated and proceed as follows c In case of equipment malfunction see Troubleshooting procedures located at the back of this manual 3 Rotate coarse focus knobs to move stage down away from objective lens as far as possible 4 Place specimen slide cover slip facing up on stage with specimen centered over condenser lens in middle of stage 5 Rotate disc diaphragm until larg...

Page 4: ...promptly wipe with soft tissue to remove moisture MAINTENANCE WARNING For your own safety turn switch to OFF position Remove adapter from the power source and detach plug from jack located at back of microscope base before maintaining microscope 1 OPTICAL MAINTENANCE Do not attempt to disassemble any lens components Consult a microscope service technician when any repairs not covered by instructio...

Page 5: ...m battery charger into DC recharging socket located on back of microscope base Your automatic switching recharger operates on 100 to 240 volts AC 50 60 Hz plug recharger into your AC wall outlet The red LED indicator lamp located on recharger will be illuminated when batteries are receiving maximum charge After batteries are charged the red LED indicator lamp will turn to green and charger automat...

Page 6: ...wn Place slide on stage with cover slip up Slide cover slip too thick Use 0 17mm thick cover slip No 1 cover slip Poor resolution image not sharp Objective lenses dirty Clean objective lenses Eyepiece lens dirty Clean eyepiece lenses Too much light Adjust iris diaphragm Spots in field of view Eyepiece or condenser lens dirty Clean lens Specimen slide dirty Clean slide Spots in field of view can al...

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